​so, riffing off of your project, and a couple others I have seen here... I built this... Phot was taken after building the main piece, what's not seen is the screw adapter for mounting the camera and the microphone clip up top. You can see the screw for it at 12:00 on the bike wheel.For the cross piece, I used 3/4 inch PVC, and stuck a piece of dowel in each end and secured through the bike wheel with drywall screws and then ran 1/4 bolts through the pipe and dowel to keep the mount upright and serve as accessory attachments, if needed. Hope you guys like it.

From my blog: Once set up all I have to do is start Live View (in video mode) and start the Ninja-2 recording. When I cycle the Live View button on the D4, the Ninja-2 starts recording when Live View is on and stops when I shut it off. Each time the Ninja-2 creates a new file for the next take. I turn on the Focus Peaking to ensure perfect focus and it stays on the whole time (does not reset when Live View is cycled). Perfection!

So here's what I was able to slap together in about an hour and a half. I used 1 inch square cedar (cuz I had it). I shaped the grips with a grinder. I also used some rubber from an old mouse pad to cushion the bottom of the camera. And it works.

Since the concept of this "steady cam" design is based on the positioning of the hands to the camera body itself, introducing a "flexible" property would only enhance the overall steadiness of the video/image. Yes? Maybe?My thoughts would be to somehow reduce the rigidity of the cross-bar section, using yet smaller PVC diameter and a longer piece. You could even remove the top straight section of PVC. All of these changes would allow greater flexibility and would reduce the motion transferred to the camera. Bottom line, this design is for very basic use. It would be useless when attaches to a bike, scooter, or other moving object.

if you dont cement the cross the camara can flip /roll over mid take it happened to me :! I plan on adding an extra T section down there to fix this but i can choose to leave it out if i need another angle

If the camera has a remote control you could add a holder near a thumb so that the camera could be more smoothly control be the remote. That would allow for use of the zoom and pause function without stopping the filming.

The further you are from the center, the steadier it is. Try holding a ruler with both hands near the middle. Now wiggle your hands. Repeat with your hands at the opposite ends of the ruler and you'll see the difference.